Air Purifier CADR Check

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Levoit LAP-C601S-WUS: CADR, room size and running cost

Smoke CADR 391 cfm · Room size 606 sq ft (ENERGY STAR) · 387 kWh/yr ≈ $70.86/yr electricity (estimate)

Certified specs

Smoke CADR391 cfm
Dust CADR398 cfm
Pollen CADR436 cfm
PM2.5 CADR394 cfm
ENERGY STAR effective room size606 sq ft (1.55 × smoke CADR, per 10 CFR 429.68)
Annual energy use387 kWh/yr
Integrated energy factor6 cfm/W
Smoke CADR per watt5.93 cfm/W
Ozone emissions (reported)0 ppb
TechnologyFan and Filter
Filter types listedHEPA-Type
Automatic modeAir Quality Sensor,Timer
Connected (app/Wi-Fi)Yes (Wi-Fi)
ENERGY STAR Most EfficientNo
MarketsUnited States, Canada
Date certified2024-11-20
ENERGY STAR partnerArovast Corporation
Other model numbers ENERGY STAR lists as equivalentLAP-C601S-AUS; LAP-C601S-WCA
SourceENERGY STAR record 4020853 · Product Finder page

How many air changes per hour would it give?

Estimate: air changes per hour (ACH) = smoke CADR × 60 ÷ room volume, at the top fan speed used for the CADR test. Real-world ACH is usually lower (lower fan speeds, furniture, filter loading).

RoomACH, 8 ft ceilingACH, 9 ft ceilingAHAM sizing
100 sq ft29.326.1Meets AHAM 2/3 rule
150 sq ft19.617.4Meets AHAM 2/3 rule
200 sq ft14.713.0Meets AHAM 2/3 rule
300 sq ft9.88.7Meets AHAM 2/3 rule
400 sq ft7.36.5Meets AHAM 2/3 rule
500 sq ft5.95.2Meets AHAM 2/3 rule
700 sq ft4.23.7Below AHAM 2/3 rule

AHAM's 2/3 rule: choose a smoke CADR of at least 2/3 of the room's area (8 ft ceiling). By that rule this model suits rooms up to about 586 sq ft.

Estimated yearly electricity cost

WhereResidential ratePer yearPer month
Louisiana12.72¢$49.23$4.10
U.S. average18.31¢$70.86$5.90
California33.61¢$130.07$10.84
Hawaii48.00¢$185.76$15.48

Estimate = 387 kWh/yr × rate. Rates: EIA Table 5.6.A, July 2026 (preliminary). Filter replacement cost is not included (data gap: not in ENERGY STAR data). Use your own rate and hours.

Similar CADR from other brands

ModelSmoke CADR (cfm)ENERGY STAR room size (sq ft)Energy use (kWh/yr)Est. electricity/yr*
Rainbow Brisk Box Ultra37057494$17.21
Blueair 3631101000356552210$38.45
Coway AP-3018B413640235$43.03
IQAir ATEM E369572295$54.01
Alen BreatheSmart 75i_V2370574304$55.66
Cuckoo CAC-D2020FW382592316$57.86
Blueair 6712211000393609336$61.52
Midea KJ600G-RX600A366567341$62.44

*Estimate: ENERGY STAR annual kWh × U.S. average residential rate 18.31¢/kWh (EIA, July 2026 (preliminary)). ENERGY STAR's annual figure assumes 16 hours/day of operation under the DOE test procedure.

Compare this model side by side with any other · All Levoit models

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We have not tested this product. Figures are as listed in ENERGY STAR data retrieved 2026-10-17.